Auth bypass in Dronecode Px4 Drone Autopilot
CVE-2026-26742
PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Period" logic. The system incorrectly applies the in-air emergency re-arm logic to ground scenarios. If a pilot switches to Manual mode and re-arms within 5 seconds (default configuration) of an automatic landing, the system bypasses all pre-flight safety checks, including the throttle threshold check. This allows for an immediate high-thrust takeoff if the throttle stick is raised, leading to loss of control.
Vulnerability class: Broken Access Control
EPSS: 0.003 (18.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Dronecode Px4_drone_autopilot
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-26742?
- CVE-2026-26742 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-03-10.
- How severe is CVE-2026-26742?
- High severity. CVSS v3 base score is 8.1 out of 10.